Properties of Polycrystalline BaTi2O5 Substituted with MgO Prepared by a Floating Zone Method
MgO substituted polycrystalline BaTi2O5 (BT2), Ba1-xMgxTi2O5 (BMT2), was prepared by a floating zone method (FZ-melting). The dielectric property of BMT2 was investigated bySubscript text an AC impedance method. At x = 0.005 MgO, the permittivity (r) showed the maximum value of 5800 for FZ-melted specimens. The Curie temperature (Tc) decreased with increasing x and the permittivity showed a flat peak at x ≥ 0.03. Second phases of BaTiO3, Ba6Ti17O40 and Ba4MgTi11O27 were identified in polycrystalline BMT2. BaTiO3 and Ba6Ti17O40 could be due to the decomposition of BT2 at high temperatures.
X. Y. Yue et al., "Properties of Polycrystalline BaTi2O5 Substituted with MgO Prepared by a Floating Zone Method", Advanced Materials Research, Vols. 311-313, pp. 1144-1147, 2011